Expansion of e.g.f. sqrt((1+2*x)/(1+4*x)).
A127190
Expansion of e.g.f. sqrt((1+2*x)/(1+4*x)).
Terms
- a(0) =1a(1) =-1a(2) =7a(3) =-75a(4) =1089a(5) =-20025a(6) =446535a(7) =-11715795a(8) =353743425a(9) =-12084751665a(10) =460905128775
External references
- oeis: A127190